Avon and Somerset Police are asking people to be aware about the theft of catalytic converters from a number of vehicles in the Keynsham area.
Police are hoping that people will report any suspicious activity they may see around vans and trucks, particularly during the night.
It follows three reported thefts overnight on 23rd – 24th April.
Vans in Lays Drive, Coronation Avenue and Firs Avenue were targeted by thieves who removed the catalytic converters using a professional chain cutting tool.
The thefts are likely to be linked to a similar number in Keynsham overnight on 19th – 20th March.
Catalytic converters contain precious metals – their exact composition will determine their re-sale value.
Anyone with any information or who sees anything suspicious is asked to call 101.